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DF: Fachverband Dielektrische Festkörper

DF 28: Slow Dynamics in Glasses and Granular Matter II (Joint Focus Session with DY and CPP)

DF 28.2: Vortrag

Freitag, 4. April 2014, 10:00–10:15, HÜL 186

THz scattering from granular media — •Philip Born¹, Heinz-Wilhelm Hübers², Nick Rothbart², and Matthias Sperl¹ — ¹DLR Institute of Materials Physics in Space, Cologne, Germany — ²DLR Institute of Planetary Research, Berlin, Germany

The structure and dynamics of driven dissipative granular media seems to be captured well by simulations. However, the results still evade experimental verification. The dynamics in colloidal suspension in contrast can be investigated comprehensively using light scattering techniques. The particle sizes in common experimental realisations of dense driven granular media, usually with particle sizes above 0.1mm, prevent application of imaging methods and established light scattering methods. Here we present approaches to the structure and dynamics of granular media using Thz radiation based light scattering. The matched wavelength ensures high sensitivity to geometric features of granular particle packings and paves the way for in-situ investigations of driven granular media.